Improvement in stop-device



VCM WNW.

PETERv RODIER, OF DETROIT, MICHIGAN.

Letters Patent'No. 83,411, dated October 27, 186B. l

IMLPROVEIi/IENT IN STOP-DEVICE.

1'.ll'he Schedule referred to in these Letters Patent and making part of the same.

`scription thereof, reference being had to the accompanying drawings, making part of this speciiication, and

. to `the letters of reference marked thereon, in which- Figure l is a plan viewof my invention;

Figure 2 is a bottom View of the same;

Figure 3 is a view of the friction-arms;

Figure 4 is a side view of thedevice, with the side cover removed; and I h A Figure 5 is a side viewrof the cover. v

My inventionrelates to a device to be used in connection with the belt of any machine, for the purpose of preventing the belt from moving in'the wrong direction, and consists of a case or box, in which is placed a bar, or twoof them, connected by an arm, against which the belt impinges, when it moves inone direction, in such manner that the bar is brought` down more forcibly against the belt, compressing and holding the belt between said ball and the side of the box, or some rigid body placed behind the belt, and thuspreventing the belt from moving in that direction, while the-said belt is perfectly free to move in the oppositie direction, as the friction-bar above mentioned is carried upward and out of constant or firm contact with the belt, by its movement in such opposite direction.

'Ihat others skilled in the art may be able to make and use my invention7 I will proceed to describeits construction and mode of operation.

`I make a suitable metallic case, E, having the sides K N L, asshown in iig. 4, and having also a base, A, with ears BB, having holes a a therein, by means of i which to secure it to the table or place where it is to be used. One end` of said case is made solid, or in the same piece with the case, while ,the other ismade so that it can be removed from the case E, by making one of the ears B in'two arts, or casting the part A sepa; rately from the part and upon the part F, as shown in iig. 5, and the edges i of the base, A', are grooved, and made to fit the sides 'i i of the base, B. By this construction, the-base, A', when inserted between the sides i i, and forced inward to the case E', forms apart of the e'ar B, while the cover F forms one end of the.

case E.V

A curved recess is made at H, in the case E, and

, also at I, a rectangular opening being made in the lower side, L, and also a similar opening, O, in the base, A. The sides s s of these openings maybe curved or rounded, to facilitate the passage of the belt through said openings. The friction-bar c may be cylindrical in form, and may have upon each end the flange 7L, to prevent the friction-bands e c 'om being forced off tlie bar c by any means. The bar c is 'connected to the pivot-bar d, which may be also cylindrical in form, by means of the arm b, and upon both the bars c and (l are placed the rubber bands e eand ff. These' bars c, d, and b, I denominate a lever, M.

Having thus described its construction, I will now proceed to describe the mode of its operation, which is illustrated in fig. 4, in which P represents, in red lines,

a portion o f a sewing-machine table, with a belt, Q, passing through it. The cover F of the case E is first removed, and the lever M is inserted within said cas'e E, the bar d of the lever M resting in the curved recess H, the other bar, o, being upward andnear the curv'ed recess I. The case E is then placed over or upon the belt, said belt passing into the openings C and O, and the lever M, in the position shown in black lines, in fig. 4. The base, A', of the cover F is then inserted in pla-cc between the curved sides i t, and forced up to the case E iirmly, andthe device is then secured in place to the lower side o1"- the table l?, by means of screws inserted through the holes a o.. If, now, the

belt moves in an upward direction, the lever M is kept in its position, as shown in black lines, in iig. 4, but, if the belt be moved in an opposite direction, or downwards, the friction ofthe belt against the bar c, or collar thereupon, carries the upper end of the `lever M down with it, until the belt becomes wedged in between the upper end of said lever M and the friction-base N,

and the belt is thus prevented from moving any farther in that direction, and the machine cannot be operated unless the belt moves upward, or in the right direction.

It is evident that the case E maybe made partially open,instead of wholly enclosed, provided the bearing H, and openings C and O, are made so that the lever M shall be retained in place, and press the belt against the friction-base N; and it is also evident that the lever M may be made solid its whole width, and may have one continuous band of rubber or friction-material passing over both ends, and, inpractice, it might be found that no rubber or friction-material would be required, as the friction between the belt and the upper part of the lever itself might be suiiicient to operate the said lever M, and it might be found unnecessary to have the iianges h h upon the bar c.

The pivot-bar d, or the lower end of the lever M, instead of resting within or against the curved recess H, may have a pin, pivot, or trunnion at each end, resting in proper bearings, made for that purpose, in the ends of the case or frame,'but this would be merely an equivalent to my device, as I have used it in that way, but prefer the construction shown. j Y

The ictiombar c and pivot-bar d, at the top and bottom of the lever M, may be octagonal, or any other suitable form, and may haveany other, friction-material placed thereon, instead of the rubber bands above mentioned, the main objectv of such material being,`in this connection, to form a cushion, and deadcn the noise.

This device is adapted for use upon very many maf chines which are driven by a belt, such machines being designed to operate by driving the belt in one direction, as in most of the sewing-machines now in use, or upon card-setting machines, and many others, and it is particularly adapted for use upon machines which are driven by hand or foot-power.; and, if it should be desired to attach this device to machines in other positions than that shown, it maybe done, by placing the base, A, upon any other side of the case E, merely modifying the form of said ease to snit the machine to which it is to be attached, and it is equally applicable for use in connection with a round belt as with afiat one, by merely varying the size of the device, and instead of having the friction-base N upon the case, or making apart of the case, that side of said case maybe made open, and

a block, or piecegof timber, or any rigid body may be placed quite near the belt, upon the back side, so .that when the upper end of the lever M should be brought down against the belt, it could press the belt against such timber or rigid body, such body thus forming a friction-base, against which the lever and belt should operate. It might be -f'ound better, in some of the larger and more powerful machines, to form africtionbase, for the lever M to operate against in this Way.

Having thus described my invention,

lVhat I claim as new, and desire to secure by Letters Pat-ent, is-

A lever, resting in suitable bearings, and operating automatically, both to st`ofp a belt, by compressing it between the end of said lever and another rigid body, upon the opposite side of the belt, and also to release its hold upon the belt, both operations being performed by the action or movement of said belt itself, substantially as herein described and set forth.

PETER RODIER.

Witnesses:

T. A. CURTIS, F. E. RICE. 

